Sash lock



FIG. 1 is a perspective view of a sash lock showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a first side view thereof, the opposite side being a mirrorimage of the side shown;

FIG. 4 is a first end view thereof; and,

FIG. 5 is a second end view thereof.

The ornamental design for a sash lock, as shown and described.